568 



TREMATODA 



sides, large acetabulum situate close behind oral sucker. Eggs 

 150-190 X 75-90 microns. 



Remarks. ^ — F . gigantica, which is nearly allied to F . hepatica, is 

 found in herbivora in Africa, and is believed to have occurred in a 

 man, for a parasite somewhat resembling it was expelled from the 

 lung during a fit of coughing associated with haemoptysis, but there 

 is some doubt as to whether it was not different from Cobbold's 

 species. Its length was 26 to 28 millimetres and its breadth 6 to 

 8 millimetres, but it was contracted. It caused fever, cough, and 

 slight haemoptysis. 



Subfamily Fasciolopsin^ Odhner, 1910. 

 Definition.— Fasciolidae without shoulder between head and 

 body, with simple zigzag intestines, and with a receptaculum seminis. 

 Type QtQYiMS—Fasciolopsis Looss, 1896. 



Faseiolopsis Looss, 1896. 



Definition. — Fasciolinae with large ventral sucker elongated 

 posteriorly to form a sac. Cirrus pouch, long and cylindrical. 

 Laurer's canal present. 



Type Species. — Faseiolopsis huski Lankester, 1857. 



Classification. — Four species are known to occur in man, and they 

 can be recognized as follows — 



A. Spines present on cuticle 



1. Vitelline acini very large' — Goddardi. 

 II. Vitelline acini not large — Kwans fluke (?). 



B. No spines on cuticle :• — ■ 



I . Cirrus sac conspicuous : — 



{a) Cirrus pouch very long, broad, convoluted, power- 

 fully built- — FUlleborni. 

 {b) Cirrus pouch not so long, narrow, straight, not 

 powerfully built — Buski. 

 II. Cirrus sac inconspicuous — Rathouisi (?). 



Faseiolopsis buski Lankester, 1857. 



Synonyms. — Distomum buski Lankester, 1857; D. crassum Busk, 

 1859; nec V, Siebold, 1836; Distomum rathouisi Poirier, 1887. 



^isXoxy ,—F asciolop sis buski is a very large trematode, which was 

 first discovered by Busk in the duodenum of a Lascar who died 

 in the Seamen's Hospital in 1843. In 1857 it was named by Lan- 

 kester, and in 1859 described by Cobbold. 



It appears to be by no means uncommon in man and pigs in 

 South China, and is known in Borneo, the Straits Settlements, 

 Assam, and India. In 1910 F . rathouisi Poirier, 1887, was regarded 

 as the same as F. buski Lankester, 1898, but at the present time some 

 authorities go back to the older view that they are separate species 

 — -e.g., Odhner says they are the same, and Ward that they are 

 separate, because the cirrus sac is convoluted and not conspicuous 

 while that of F buski is straight and conspicuous. 



